title: Ultrasound-guided aspiration cytology of renal expansions.
abstract: Ultrasound-guided fine needle aspirates from 52 malignant renal tumours and 128 benign expansions taken in 1982-1988 were analyzed retrospectively. There were three suspicious aspirates (class III) suggesting a possibility of malignancy among the cases of benign renal expansions and seven false negative aspirates (C I-II) among the malignancies. The accuracy, sensitivity and specificity of the method for differentiating malignant cases from benign ones were 94.1%, 85.1% and 97.5% respectively. Cytology was correct in 86% of the radiologically equivocal cases and in 63.6% of the small renal neoplasms. Aspiration cytology identifies haemorrhagic cysts and infectious conditions, but is not reliable for the detection of malignancy in a multilocular cyst.
authors.forename: T
authors.initials: T
authors.lastname: Tikkakoski
authors.forename: M
authors.initials: M
authors.lastname: Päivänsalo
authors.forename: M
authors.initials: M
authors.lastname: Apaja-Sarkkinen
authors.forename: A
authors.initials: A
authors.lastname: Ollikainen
authors.forename: P
authors.initials: P
authors.lastname: Lohela
authors.forename: K
authors.initials: K
authors.lastname: Matti
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001707:Biopsy, Needle / Q000379:methods*; D002648:Child; D005260:Female; D005387:Finland / Q000453:epidemiology; D006801:Humans; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000473:pathology*; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000473:pathology; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014463:Ultrasonography